<template>
    <div style="background-color: blanchedalmond;">
        {{ message }}
        <button @click="greet()">问候</button>
    </div>
</template>

<script>
export default {
    data() {
        return {
            message:'hello,friend!'
        }
    },
    methods: {
        greet(){
            this.message = 'hello,' + this.$attrs.name + '!'
        }
    },
}
</script>